US954201A

US954201A - Rolling mill for tubes.

Info

Publication number: US954201A
Application number: US46796608A
Authority: US
Inventors: Anthony Joseph Mcginness
Original assignee: Individual
Current assignee: Individual
Priority date: 1908-12-17
Filing date: 1908-12-17
Publication date: 1910-04-05
Anticipated expiration: 1927-04-05

Description

Elmoent'or fl. 1 7 "Gm mass,

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Patented Apr. 5, 1910.

A. J. MOGINNESS.

ROLLING MILL FOR TUBES.

APPLIUATION IILL'D nmlv, 1008.

A. J. MCG'INNESS.

ROLLING MILL FOR TUBES.

APPLICATION run DEG. 1?. 100a.

Patented Apr. 5, 1910.

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A. J. MOGINNESS.

ROLLING MILL FOR TUBES.

AYPLIOATION nun DBO. 1'1, 100a.

Patented Apr. 5, 1910.

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ANDIZLW u QRAMM co PNGTD-UINOQRAPNERF. Nlsmncmn uc UNTTED %TATES PATENT @FFTCE.

ANTHONY JOSEPH MQGINNESS, 0F MONESSEN, PENNSYLVANIA.

ROLLING-MILL FOR TUBES.

To all whom it may concern:

Be it known that I, ANTHONY Josern MCGINNESS, a citizen of the United States of America, residing at Monessen, in the county of \Vestmoreland and State of Pennsylvania, have invented certain new and useful Improvements in Rolling-Mills for Tubes, of which the following is a specification, reference being had therein to tilt accompanying drawing.

This invention relates to rolling mills for tubes, and the primary object of my in vention is to provide a novel machine for rolling tubular billets or tubes to a requiret gage or size in an economical and expeditious manner conducive to a high grade of production that can be used for various purposes.

Another object of the invention is to pro vide a machine wherein positive and reliable means are employed for reducing a tubular billet or tube to a desired interior and exterior diameter and produce practically a seamless tube.

A further object of this invention is to provide a machine comprising a series of rolls arranged for simultaneously reducing and feeding a tubular billet or tube between the rolls, whereby a properly positioned mandrel will affect the interior of the tubular billet or tube, while the series of rolls affects the exterior of the billet or tube.

With the above and other objects in View which will more readily appear as the invention is better understood, the same consists in the novel construction, combination and arrangement of parts to be hereinafter described and then specifically claimed.

Referring to the drawings :-Figure 1. is a side elevation of the machine partly broken away, Fig. 2 is a longitudinal seetional view of the same, partly broken away, Fig. 3 is a plan of the machine, partly broken away, Fig. i is a view taken on the line IVIV of Fig. 3, looking toward the reducing rolls, Fig. 5 is a cross sectional view of the reducing rolls taken on the line V-V of Fig. 3, Fig. 6 is a cross sectional view taken on the line VIVI of Fig. 3, Fig. 7 is a cross sectional view taken on the line VII-VII of Fig. 3, illustrating a train of gears for driving the machine, Fig. 8 is a view taken on the line IV-IV of Fig. 3 showing a mandrel clamp forming part of the machine, Fi 9 is a cross sectional View taken on the line IX-IX of Specification of Letters Patent.

Application filed December 17, 1908.

Patented Apr. 5, 1910.

Serial No. 467,966.

Fig. 3, Fig. 10 is an enlarged detail view of a portion of the mandrel of the machine, Fig. 11 is an enlarged elevation of one of the large reducing rolls of the machine, and Fig. 12 is a similar view of one of the small reducing rolls of the machine.

To put my invention into practice, I provide longitudinal parallel bed frames 1 and upon these frames are located two sets of transverse housings, 2 and 3 and i and 5, respectively. Centrally of the housings 2 and 3 is journaled a longitudinal drive shaft 6 adapted to be coupled to a suitable source of power, as a motor (not shown). Upon the shaft. (3 between the housings are mounted two large gear wheels 7 and S. The gear wheel 7 meshes with a small gear wheel 9 mounted upon a longitudinal shaft 10, journaled longitudinally of the housings 2 and 3. The small gear wheel 0 meshes with a large gear wheel 11 mounted upon a shaft 12, journaled longitudinally of said housings.

The housings i and 5 are provided with longitudinally alining openings 17, said openings in elevation conforming in shape to a Maltese cross. Centrally of each opening is located a stationary guide block 18 having a circular opening 19 formed therein, and adapted to engage said guide block 18 are liners 20, and holding said liners in engagement with said guide block are the inner bearing blocks or brasses 21, which in conjunction with outer bearing blocks or brasses 22 serve as adjustable bearings for the necks 23 of longitudinal rolls 2%, 25. 2(3 and 27. To adjust the rolls 24: to 27 inclusive, the housings t and 5 are provided with screws 28 engaging the outer bearing blocks 22.

The rolls 24: to 27 inclusive are provided with wabblers 29, and these wabblers are connected by coupling sleeves 30 to longitudinal connecting rods 31, which extend to the housing 2 and are connected by coupling sleeves 32 to the inner ends of the shafts 10, 1.2, 14 and 1G. The drive shaft 6 through the medium of the shafts 10, 12, let and 1(3, connecting rods 13, and

coupling sleeves

30 and 32 are adapted to revolve the

rolls

25, 27, 24 and 26 respectively. The rolls 24: and 25 have a diameter smaller than the

rolls

26 and 27, and the

small rolls

24 and 25 are disposed one above the other, while the rolls 24; and 27 are in a horizontal plane. The forward ends of the rolls 24:

serrated, as at 47.

to 27 inclusive are tapered, as at 33, and all of said rolls are disposed, whereby when the rolls are revolving, a tubular billet or tube will be fed longitudinally between the rolls. The

small rolls

24 and 25 which are driven by the shafts 10 and 14 revolve approximately twice as fast as the

rolls

26 and 27, and said small rolls are disposed diagonally between the housings 4 and 5, a few degrees off a vertical plane intersecting the pass between said rolls. The roll 24 is disposed at an angle the reverse of the roll 25, this arrangement of the rolls being best shown in Figs. 3 to 5 inclusive of the drawings. The same arrangement is true in connection with the

large rolls

26 and 27, with the exception that these rolls are disposed a few degrees off a horizontal plane intersecting the pass between said rolls. This angular arrangement of said rolls has a tendency, when said rolls are revolved, to feed a tubular billet or tube through the pass between said rolls, and on account of the position of the shafts 10, 12, 14 and 16, and the distance between the housing 2 and 5, the con necting rods 31 can be easily coupled to said shafts and rolls for revolving said rolls without subjecting the connecting rods 31 to any great stress or strain.

To brace the housings 4 and 5, said housings are connected by tie rods 34.

Mounted upon the longitudinal bed frames 1 between the housings 2 and 5 are brackets 35 supporting a longitudinal trough 36 in alinement with the openings 19 of the central guide block 18. The trough 36 has a side extension 37, whereby a tubular billet or tube can be easily placed in the trough and moved through the guide block 18 of the housing 5.

The bed frames 1 are provided with ex tension frames 38 and mounted upon said frames are standards 39 supporting longi' tudinal parallel bearings 40. Journaled upon said longitudinal bearings are a plurality of transverse conical shaped rollers 41, the object of which will presently appear.

Arranged upon the extension frames 38 between the rollers 41 and the housing 4 is a frame, comprising posts 42 connectedby transverse beams 43 and 44. Between the beams 43 and 44 is arranged a mandrel clamp, said clamp comprising two gripping members 45 and 46, the former being slidably mounted in the beam 43 and the latter in the beams 44. The confronting faces of these gripping members are concave and The beam 43 is provided with vertical slots 48 and extending through said slots and the member 45 is a pin 49. Loosely connected to one end of the pin is a slotted lever 50 fulcrumed upon the beam 43, as at 51. Pivotally connected to the opposite end of the lever 50 is a link 52, and this link is pivotally connected to the end of a pin 53 extending through the slotted end of a lever 54 into the member 46. The lever 54 is fulcrumed upon one of the posts 42, at 55, and is provided with a tread plate 56. The lever 54 is also con nected to the post 42 by a coil spring 57, this spring normally maintaining the tread lever 54 in a horizontal position, and the members 45 and 46 separated, as shown in Fig. 8.

he outer ends of the longitudinal bearings 40 are connected to a frame 58 supported by the extension frames 38. The frame 58 is provided with a side bearing 59 for a yoke 60, and slidably mounted in said yoke is a block 61. Adjustably mounted in the yoke 60 is a screw 62 which is connected to the outer side or end of the block 61. The opposite side or end of the block 61 is provided with a contracted stem 63 and fitted upon this stem is a tubular mandrel rod 64. This rod extends over the rollers 41, between the clamping members 45 and 46, through the housing 4 into the pass of the rolls 24 to 27 inclusive. The end of the tubular rod 64 between said rolls is provided with a revolublemandrel head To hold the yoke 60 in engagement with the frame 58, said yoke is provided with a keeper 66 adapted to be engaged by a spring-held pivoted lever 67.

Operation: Assuming that the machme is in operation, the tubular billet or tube to be operated upon by the machine is placed 1n the trough 36. The tubular billet 1s then moved into the pass between the rolls 24 to 27 inclusive, the end of the tubular billet being placed in engagement with the man drel head 65. As heretofore stated, the rev oluble rolls 24 to 27 inclusive will gradually feed the tubular billet through the pass between said rolls on to the mandrel rod 64. As the tubular billet passes between the rolls, the rolls in conjunction with the mandrel head 65 will perfectly shape the tubular billet, reduce the thickness of the billet to that extent as to form a seamless tube that will be ejected from the rolls in a finished and polished condition. After the tube has passed on to the mandrel rod 64 clear of the clamping members, and is supported by the rollers 41, the lever 54 is tread upon to simultaneously move the clamping members 45 and 46 and grip the mandrel rod 64, whereby said rod will be held stationary. While the lever 54 is held by one operator, another operator raises the latch 67 to release the keeper 66 of the yoke 60, and then said yoke is swung to an open position, the stem 63 moving out of engagement with the mandrel rod 64. The finished tube 1 surrounds the mandrel rod 64 and resting upon the rollers 41 is now drawn lengthwise from the mandrel rod 64, the

yoke 60 closed to support the outer end of the mandrel rod 64, and then the lever 54: released. When the lever 54 is released, the mandrel head will contact with the

rolls

25, 2G and 27 and can revolve in the end of the mandrel rod 64, but, it is preferable to place another tubular billet in position while a finished tube is being removed from the mandrel rod 64.

I do not care to limit my invention to the specific form of mandrel clamp shown or to the exact manner of removing a finished tube from the mandrel rod, and while in the drawings there is illustrated the preferred embodiments of my invention, I would have it understood that the elements therein can be varied or changed as to shape, proportion and manner of assemblage without departing from the spirit of the invention.

Having now described my invention what I claim as new, is:

1. In a tube rolling machine, tube forming rolls, a mandrel head, a rod supporting the mandrel head between the rolls, a screw engaging the rod and adapted to adjust the latter longitudinally, a swinging yoke supporting the adjusting screw and a clamping means arranged to engage the rod at a point adjacent the inner end thereof.

2. In a machine for forming tubes, a set of forming elements adapted to form a tube by rolling pressure exerted over a mandrel head, a mandrel head carried by a mandrel rod, a means adapted to support said red at its outer end, said supporting means comprising an element capable of holding the rod in various longitudinally adjusted positions, said supporting means also capable of being withdrawn from the rod to permit the removal of a tube from the latter by a longitudinal movement of the tube relative to the rod and a clamping means adjacent the rolls near the inner end of the rod for clamping the rod and holding the same in its various adjusted positions during the removal of the tube.

3. In a tube rolling machine, tube-forming rolls, a mandrel head, a rod supporting the mandrel head between the rolls, an adjusting screw engaging the red, a swinging yoke supporting the adjusting screw, and clamping means adjacent to the roll near he inner end of the rod for holding the latter in various adjustments during the removal of the tube.

In testimony whereof I aflix my signature in the presence of two witnesses.

ANTHONY JOSEPH MCGINNESS.

WVitnesses:

MAX H. SnoLovrrz, K. H. BUTLER.